Using the New Outlook for Mac for personal email and calendar
Hello Mark L, thanks for posting this in our community.
There is currently no built-in setting to force Outlook for Mac to always show the full date in the message list. This is a limitation of the new interface.
One workaround is to switch back to Legacy Outlook for Mac. In the top-right corner of Outlook, look for the toggle to switch back to Legacy Outlook. Legacy Outlook supports showing full dates and times in the inbox. After switching, go to View > Arrange By > Date Received and make sure the Received column is visible by opening View Settings, selecting Columns, and adding “Received.”
Another option is to adjust the view settings in the New Outlook. Go to View and choose Change View, then select Compact or Single view. These views sometimes display more detailed date information, although results may vary.
Kind regards,
John Oli